Max hinzelmann



MAX IIINZELMANN, OF MUNICH, GERMANY.

ADHESIVE COMPOUND AND PROCESS OF PRODUCING SAME.

SPECIFICATION forming part of Letters Patent No. 608,044, dated July 26, 1898.

' Application filed May 24, 1897- Serial No. 637,985. (No specimens.)

T0 aZZ whom i2: may concern.-

Be it known that I, MAX HINZELMANN, a subject of the German Emperor, residing at Munich, Kingdom of Bavaria, Empire of Germany, have invented certain new and useful Improvements in Printing on' Leaf Metal by Cold Method, of which the following is a specification.

This invention relates to a composition for use in printing on metal leaf in the cold and tea process for making such composition. This composition is to be applied in the usual manner to the places to be printed on and takes up or holds the metal leaf firmly, so that the same cannot be removed either by washing or otherwise without destroying the paper. The composition consists of a mixture of zinc-white,raw linseed-oil, gilders varnish, yellow wax, asphalt,and turpentine mixed and ignited. It is made as follows: First the zincwhite is ground with the linseed-oil, and the other compounds are then added. The whole is heated to boiling and ignitedthat is, set on fire and allowed to burn until all substances contained in the material which could oxidize the leaf metal are burned. The mass is then allowed to cool and placed in a pigment-mill, after going through which it is ready for the printing. By means of this process metal-leaf printing is enabled to be done in power-presses, and metal leaf may also be printed on in lithographic and woodcut work.

The material gilders varnish, above referred to, is a varnish in general use in the gilders trade. I would state that the same or an equivalent material may be made by heating ten parts, by weight, of linseed-oil with one-fourth part of ferrous sulfate till the oil becomes thickened, then adding to the oil while it is cooling two parts, by Weight, of rosin-oil and ten parts,byweight,of turpentine,

' stirring the same in thoroughly. Any other drier may be used in place of the ferrous sulfate, and the proportions may be varied, it being understood that this varnish is simply an oil varnish of proper quality. It may be strained through cotton or otherwise clarified before being used.

The proportions I prefer to use of the several ingredients are as follows: zinc-white, nine grams; linseed-oil, twenty-two grams;

gilders varnish, five grains; yellow beeswax,

three grains; asphalt, two and one-half grams; Venetian turpentine, three grams.

Having thus described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. A composition for use in printing on metal leaf consisting of the residue after ignition of a mixture of zinc-white, linseed-oil, gilders varnish or its described equivalent, yellow wax, asphalt and turpentine, substantially as set forth. 2. The process of making a composition for use in metal-leaf printing, consisting in mixing zinc-White, linseed-oil, gilders varnish or its described equivalent, yellow wax, asphalt and turpentine and igniting the mixture.

MAX IIINZELMANN.

Witnesses:

JACOB SILBORsTEIN, PAUL AOKERMANN. 

